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  <div class="section" id="additional-clean-files">
<span id="prop_dir:ADDITIONAL_CLEAN_FILES"></span><h1>ADDITIONAL_CLEAN_FILES<a class="headerlink" href="#additional-clean-files" title="Permalink to this headline">¶</a></h1>
<p>A <a class="reference internal" href="../manual/cmake-language.7.html#cmake-language-lists"><span class="std std-ref">;-list</span></a> of files or directories that will be
removed as a part of the global <code class="docutils literal notranslate"><span class="pre">clean</span></code> target.  It is useful for
specifying generated files or directories that are used by multiple targets
or by CMake itself, or that are generated in ways which cannot be captured as
outputs or byproducts of custom commands.</p>
<p>If an additional clean file is specific to a single target only, then the
<span class="target" id="index-0-prop_tgt:ADDITIONAL_CLEAN_FILES"></span><a class="reference internal" href="../prop_tgt/ADDITIONAL_CLEAN_FILES.html#prop_tgt:ADDITIONAL_CLEAN_FILES" title="ADDITIONAL_CLEAN_FILES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">ADDITIONAL_CLEAN_FILES</span></code></a> target property would usually be a better
choice than this directory property.</p>
<p>Relative paths are allowed and are interpreted relative to the
current binary directory.</p>
<p>Contents of <code class="docutils literal notranslate"><span class="pre">ADDITIONAL_CLEAN_FILES</span></code> may use
<span class="target" id="index-0-manual:cmake-generator-expressions(7)"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#manual:cmake-generator-expressions(7)" title="cmake-generator-expressions(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">generator</span> <span class="pre">expressions</span></code></a>.</p>
<p>This property only works for the <span class="target" id="index-0-generator:Ninja"></span><a class="reference internal" href="../generator/Ninja.html#generator:Ninja" title="Ninja"><code class="xref cmake cmake-generator docutils literal notranslate"><span class="pre">Ninja</span></code></a> and the Makefile
generators.  It is ignored by other generators.</p>
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